Question

qual a raiz de y=x²-6x+9

Answer 1

∆=(-6)²-4.1.9
∆=36-36
∆=0
x=-(-6)+/-√0/2.1
x=6/2
x=3

Answer 2

delta= (-6)² -4.1.9
Delta= 36-37
Delta=9
x= -(-6) +-√9 tudo sobre 2
x= 6 +-3 tudo sobre 2
x¹= 3/2=1,5
x²= 9/2=4,5
Y¹= 1,5²-6.1,5+9
Y¹= 2,25-9+9
Y1= 2.25